Body hair in mammals is typically thought to have evolved to keep us warm in colder prehistoric times, but a new study suggests that it may do the opposite, at least in elephants. Epidermal hair may have evolved to help the ...
Plants & Animals
Oct 10, 2012
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It takes at least 10 times as many generations for a mouse to reach elephantine proportions as for the reverse transition, reveals a vast study of mammalian evolution over the past 70 million years.
Evolution
Oct 3, 2012
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New research reveals that fruit flies and mammals may share a surprising evolutionary link in how they control body temperature through circadian rhythm, unlocking new ways to study the insects as models of human development ...
Plants & Animals
Sep 13, 2012
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Numerous processes in our body fluctuate in a regular pattern during the day. These circadian (or daily) variations can be driven by local oscillators present within our cells or by systemic signals controlled by the master ...
Cell & Microbiology
Aug 23, 2012
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Dinosaurs may have been warm-blooded, scientists said Wednesday, in a finding that could debunk one of the most commonly-held images of the extinct giants.
Archaeology
Jun 27, 2012
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When Sifrhippus, the earliest known horse, first appeared in the forests of North America more than 50 million years ago, it would not have been mistaken for a Clydesdale. It weighed in at around 12 pounds -- and it was destined ...
Evolution
Feb 23, 2012
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(PhysOrg.com) -- Most of what is known about the ability of some cold blooded animals and several insects to survive having their body temperature fall below freezing has led to the conclusion that those organisms that can ...
(PhysOrg.com) -- Though generally thought to be quite dry, roughly half of the giant asteroid Vesta is expected to be so cold and to receive so little sunlight that water ice could have survived there for billions of years, ...
Space Exploration
Jan 25, 2012
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(PhysOrg.com) -- A hotter home appears to produce babies with better cognitive abilities - but before you turn up the home heater to make your baby brainier, the research was conducted on the Australian lizard Bassiana duperreyi ...
Plants & Animals
Jan 12, 2012
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The blood from woolly mammoths -- those extinct elephant-like creatures that roamed the Earth in pre-historic times -- is helping scientists develop new blood products for modern medical procedures that involve reducing patients' ...
Biochemistry
Sep 14, 2011
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